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How to use month as a parameter? [message #1384893]

Mon, 02 June 2014 19:58

Bob B

Messages: 5
Registered: May 2014

Junior Member

I am working on a report in which the user will need to select a month to query tables and display results for the selected month. The database is Postgres. I have set up parameters so that months are strings containing the month number (example- 01 for January, 04 for April, etc).

Here is my Where clause: WHERE date_part('month',"public"."usage_2014"."date") = ?

If I were to hard code the month it works fine, but when using the parameters I get an error, here's an excerpt from it:

Cannot get the result set metadata. org.eclipse.birt.report.data.oda.jdbc.JDBCException: SQL statement does not return a ResultSet object. SQL error #1:ERROR: operator does not exist: double precision = character varying Hint: No operator matches the given name and argument type(s). You might need to add explicit type casts. Position: 594 ; org.postgresql.util.PSQLException: ERROR: operator does not exist: double precision = character varying Hint: No operator matches the given name and argument type(s). You might need to add explicit type casts.

What am I doing wrong here?

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Re: How to use month as a parameter? [message #1384895 is a reply to message #1384893]

Mon, 02 June 2014 20:15

Bob B

Messages: 5
Registered: May 2014

Junior Member

Resolved, but strange. The month parameter should be numeric. I originally had the parameter values as strings. When I changed them to Integer the report worked fine. But the strange part- when I hard coded the query, I had the month in single quotes, such as '02' for February, and this worked.

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